I still haven’t found the photos that I was looking for, but I have discovered the photos from my 2015 visit to New York. And, in particular, to what I consider as pretty much the best museum in the world, the Metropolitan Museum of Art. Back when I visited you were allowed to pay whatever you felt appropriate, although that system has since been heavily reformed.
But, the above wallpaper was cleverly done and showed the scope of the collections in the American Wing of the building. It was comprised of hundreds of smaller photos which from right to left show the date of the acquisition by the museum. When material is presented like this, it shows just how large the collections of some institutions are, it’s all quite inspiring.